Meathead is the name given to the schoolyard youth who beat up Jack Shephard when he was a boy. Jack awoke and looked over to see his friend, Marc Silverman being beaten up by another teenager. When told to stay down by Meathead, Jack ignored him and tried to get up and help Marc. Meathead said, "You shoulda stayed down, Jack!" and punched him, knocking him out. ("White Rabbit")